Work - Pranapada Lagna Calculator

Some traditional texts suggest that Pranapada is simply the Sun's position plus 6 signs ($180^\circ$).

(Gemini, Virgo, Sagittarius, Pisces): Sun's Longitude + Base Degree + 120°. For a user-facing feature, the calculator should include: Input Fields pranapada lagna calculator work

As mentioned, the duration of the Lagna (Step 3) changes based on where you are born. A generic calculator that assumes a fixed 2-hour rising time for every sign will output nonsense. In New York, Libra rises fast; in London, Scorpio rises slowly. Good calculators use latitude tables. Some traditional texts suggest that Pranapada is simply

class PranapadaLagnaCalculator: def __init__(self, birth_date, birth_time, lat, lon, tz, breath_sec=4.0, ayanamsa=0.0): self.birth_jd = to_jd(birth_date, birth_time, tz) self.sunrise_jd = get_sunrise_jd(birth_date, lat, lon, tz) self.breath_sec = breath_sec self.ayanamsa = ayanamsa def compute_pranas_elapsed(self): delta_sec = (self.birth_jd - self.sunrise_jd) * 86400 return delta_sec / self.breath_sec A generic calculator that assumes a fixed 2-hour

[ P_elapsed = \frac(T_b - T_s) \text in seconds4 \text seconds/prana ]

Vedic time uses . 1 Ghati = 24 modern minutes. The calculator determines: How many Ghatis have passed since sunrise?

: Add the result directly to the Sun's longitude.